I have 660 bored out 686 stage 2 cam with upgraded springs uni filter moded airbox runs fine up top when I am at dead stop i punch it to wot it will cut out fall on its face now if I ease in to it then go wot no issues wondering What it could be i did adjust air fuel screw seem like it helped a little can't go anymore turns i moved the needle up 1 no change do I need change pilot jet? What jets have other's ran with this setup i am in MN